Favorite scene from Zulu was the one where the overwhelming Zulu army assembles and begins to strike their shields and chant. The mainly Welsh regiment of redcoats see their doom laid out before them, and begin to sing a Welsh hymn which begins hesitantly, gathers strength, and ends triumphantly. It's a transcendent moment, as touching as the scene in The Man Who Would Be King, when Connery and Caine sing together as the tribesmen hack the bridge supports out from under Sean.
Speaking of Custer, if you were looking for the bloodthirsty, racist, psychotic Long Hair you sure got him in Little Big Man, a serious flaw in what was otherwise a really good film. But hey, it was the sixties.
Apocalypse Now was a great war film, I thought. It was like a joint effort between James Jones and Hunter Thompson, which was exactly what was needed in a film about the blurred lines between good and evil that came to define the soul of Kurtz, and of the Vietnam War.
Speaking of James Jones, two of my favorite war films came from him...Thin Red Line and From Here to Eternity. Mailer's The Naked and the Dead belongs up there too.